O-ethyl-S-n-propyl-0-2-cyanovinyl-thionothiol-phosphoric acid esters

ABSTRACT

O-ethyl-S-n-propyl-O-vinyl-thionothiolphosphoric acid esters of the formula   IN WHICH R is lower alkyl, carbo-lower alkoxy, or phenyl or naphthyl optionally substituted by halogen, nitro, nitrile, lower alkyl, lower alkoxy or halo-lower alkyl and R&#39;&#39; is hydrogen or lower alkyl, WHICH POSSESS INSECTICIDAL AND ACARICIDAL PROPERTIES.

United States Patent [1 1 Maurer et a1.

[73] Assignee: Bayer Aktiengesellschaft,

Leverkusen, Germany [22] Filed: Jan. 14, 1974 [21] Appl. No.: 433,011

[30] Foreign Application Priority Data Jan. 18, 1973 Germany 2302273 [52] US. Cl 260/940; 260/465 A; 260/465 E; 260/465 F; 260/465 R; 260/465.5; 424/210 [51] Int. Cl..... C07f 9/16; AOln 9/36; C07e 121/02 [58] Field of Search 260/940 [56] References Cited UNITED STATES PATENTS 3,579,614 5/1971 Miller et al. 260/940 July 1,1975

Primary ExaminerAnton H. Sutto Attorney, Agent, or FirmBurgess, Dinklage & Sprung ABSTRACT O-ethyl-S-n-propyl-O-vinyl-thionothiolphosphoric acid esters of the formula P-O-C=C(R')CN (I n-C H S in which R is lower alkyl, carbo-lower alkoxy, or phenyl or naphthyl optionally substituted by halogen, nitro, nitrile, lower alkyl, lower alkoxy or halo-lower alkyl and R is hydrogen or lower alkyl,

which possess insecticidal and acaricidal properties.

7 Claims, No Drawings 1 O-ETHYL-S-N-PROPYL-0-2-CYANOVINYL- THIONOTHIOL-PHOSPHORIC ACID ESTERS The present invention relates to and has for its ob jects the provision of particular new O'ethyl-S-npropyl-O-vinyl-thionothiolphosphoric acid esters which possess insecticidal or acaricidal properties, active compositions in the form of mixtures of such compounds with solid and liquid dispersible carrier vehicles, and methods for producing such compounds and for using such compounds in a new way especially for combating pests, e.g. insects and acarids, with other and further objects becoming apparent from a study of the within specification and accompanying examples.

It is known from German Published Specifications DOS 2,049,695 and 2,030,509 and Belgian Patent Specification No. 654,748 that nitrile-substituted and- /or carbalkoxy-substituted vinyl-(thiono)phosphoric acid esters, such as, for example, 0,0-diethyl-O[ lphenyl- (Compound A) or 1-o-methylphenyl- (Compound B) or l-m-methoxyphenyl- (Compound C) or l-(2',5'-dichlorophenyl)-2cyanovinyl]-thiono- (Compound D), 0,0-diethyl-O-( l-methyl-Z-phenyl-Z- cyanovinyl)-thiono- (Compound E) and 0,0diethyl- 1-phenyl-2-methyl-2-cyanovinyl )thiono-phosphoric acid ester (Compound F) and O-ethyl-O-( 1-methyl-2- cyano-Z-carbethoxyvinyl)-ethane-phosphonic acid ester (Compound G), possess isecticidal and acaricidal properties.

The present invention provides propyl-O-vinyl-thionothiolphosphoric acid esters of the general formula in which R is lower alkyl, carbo-lower alkoxy, or phenyl or naphthyl optionally substituted by halogen, nitro. nitrile, lower alkyl, lower alkoxy or halo-lower alkyl and R is hydrogen or lower alkyl. Preferably, R is alkyl of l to 4 carbon atoms, especially methyl or ethyl, carbalkoxy with l to 6, especially l to 4, carbon atoms in the alkyl moiety, or a phenyl or naphthyl radical which is optionally monosubstituted Surprisingly, the O-ethyl-S-n-propyl-O-vinylthionothiolphosphoric' acid esters according to the invention display a better insecticidal and acaricidal action, with substantially lower toxicity than the previously known compounds of analogous structures and of the same type of action. The products according to the present invention thus represent a genuine enrichment of the art. Furthermore, the new substances contribute to meeting the constant demand for new preparations in the field of pesticides. This demand is due to the fact that the commercially available agents have to meet higher and higher standards, particularly with respect to the protection ofthe environment, such as low toxicity to warm-blooded animals and low'phytotoxicity. rapid degradation in and on the plant so that they will no longer be present even if harvesting takes place shortly after application of the pesticide. or activity against resistant pests.

The invention also provides a process for the production of an O-ethyl-S-n-propyl-O-vinyl-thionothiolphosphoric acid ester ofthe formula (I) in which an O- ethyl-S-n-propyl-thionothiol-phosphoric acid diester halide of the formula P-Hal (II) in which Hal is halogen, preferably chlorine, is reacted with a ketonitrile of the formula (III) which embraces itsenol of the formula (IV):

( (IVa) The O-ethyl-S-n-propyl-thionothiolphosphoric acid or g Y g I diester halides to he used as the starting material can t. alkylnitriles are reacted with oxalic acid esters in be obtained according to known processes by reaction the presence of alcoholates:

of thiono-phosphoric acid trihalides, preferably trichlorides, with n-propanol, subsequent-heating in the pres- 5 ence of sulphurizing agents, distillation of the interme- O O diate product and further reaction with alkali metal 2 a '8 ethylate.

The ketonitriles of the'formula (III), or their enol N'f'lO Alk form (Illa), some of which are known, can also be prel0 CO All: pared according to processes which are in principle i 2 known, for example if l =C a. alkylnitriles are reacted with arylcarboxylic acid esters in the presence of alcoholates at elevated temperatures, optionally in a solvent, and the reaction mixl ture is Subsequently treated with acids: The following may be mentioned individually as examples of ketonitriles (III) or their enol salts (lV) Alkyl-CH -CN Aryl(O Alk which are to be used in the process of the invention: )fl'whvlm I 2-, 3- and 4-chloro-. 23-, 3,4-, 2,6-dichloro-, 2,3,4-, 2) warming NC(Alkyl)CH-C--Aryl 2,3,5-, 2,3,6-, 2,4,5-, 2,4,6-,- 3,4,5- and 3,4,6-trichlorobenzoylor naphthoyl-acetonitrile and the corresponding bromine and fluorine derivatives, and also 3-nitro-, or 3-trifluoromethyl-, 4-cyano-, 2-, 3- and 4-methyl-, 2-,

b. aryl compounds are reacted with acetyl chloride in 3- and 4-ethyl-, 2-, 3- and 4-n-propyl-, 2-, 3- and 4-isothe presence of aluminum chloride, the intermediate 25 propyl-, 2-', 3- and 4-methoxy-, 2-, 3- and 4-ethoxy-, product is brominated and finally the bromine is re- 2,4-dimethyl-, 2,4-diethyl, 2,4-di-n-propyl-, 2,4-di-isoplaced by the nitrile group: propyl-, 2,5-dimethyl-, 2,5-diethyl-, 2,5-di-n-propyl-,

O AlCl O Br Br 0 aCN Aryl I II I I! C C-Aryl NC-CH=C-01 Ia or 2,5-di-isopropyl-benzoyl-acetonitrile or -propionitrile c. arylnitriles are reacted with acetonitrile in the and the corresponding alkali metal salts, alsothe alkali presence of an alkali metal and the resulting ketimine metal salts of 3-cyano or 3-cyano-3-methyl-pyruvic is split with acid: acid methyl ester, ethyl ester, n-propyl ester, iso-propyl ester, n-butyl ester, sec.-butyl ester, iso-butyl ester and tert.-butyl ester, the corres onding 3-c ano-3-eth l-, Na acld -3-n-propyl-, -3-iso-propyl-, -3-n-butyland -3-se c.- Aryl-CN CH CN Aryl-C-CH -CN butyl-pyruvic acid alkyl estersand finally the alkali O I 5 metal salts of acetylacetonitrile and propionylacetonitrile. Aryl-CCH -CN The phosphorylation process for the preparation of the new substances of the formula (I) is preferably car- Or ried out with the use of a solvent which term includes d. n the ent that n Case (C) and is phenyl and nitro a mere diluent. Practically all inert organic solvents can derivatives are desired, the end compound is n'itrated f gi -B E pdmCula-r Include with fuming nitric acid. for example: op lOl'ld y c orlnate a 1p atic and aromatic hydrocarbons, for example benzene, toluene, xylene, benzine, methylene chloride, chloroform, carbon tetra- S EH0 O chloride or chlorobenzene; ethers, for example diethyl Q EL ether, dibutyl ether and dioxan; ketones, for example 2 Q 2 acetone, methyl ethyl ketone, methyl isopropyl ketone N0 and methyl isobutyl ketone; nitriles, for example aceto- 2 nitrile and propionitrile; and amides, for example di- 60 methylformamide.

or I l All customary acid-binding agents can be used as e. isoxazole derlvatives are reacted with potassium acid acceptors. Alkali metal carbonates and alkali tert.-butylate: metal alcoholates, such as sodium carbonate and potas- H potassium Alk I I tert l yl 'Aryl) but 1 te K (Aryl, Alkyl) 0 y a a sium carbonate, sodium methylate and ethylate and potassium methylate and ethylate, and potassium tert.- butylate. and also aliphatic, aromatic or heterocyclic amines, for example triethylamine. dimethylamine, dimethylaniline, dimethylbenzylamine and pyridine, have proved particularly suitable.

The reaction temperature can be varied over a wide range. In general, the reaction is carried out at 0 to 100C, preferablyat 0 to 50C.

The reaction is in general allowed to take place under normal pressure. I

To carry out the process, the starting substances are generally employed in equimolar ratio. An excess of one or other component produces no significant advantages. In general, the phosphoric acid component is added dropwise to the keto compound or enol compound, the latter being employed, if appropriate, without intermediate isolation and optionally in one of the indicated solvents, and if appropriate the mixture is allowed to continue to react for l or more hours, with warming. After cooling, the reaction solution may be taken up in an organic solvent and the organic phase worked up in the usual manner, for'example by washing, drying and distillation.

The new compounds are obtained in the form of oils which in some cases cannot be distilled without decomposition but can, by so-called slight distillation, that is to say prolonged heating under reduced pressure to moderately elevated temperatures, be freed of the last volatile constituents and can be purified in this way. They are characterized by the refractive index.

The O'ethyl-S-n'propyl-O-vinyl-thionothiolphosphoric acid esters according to the invention are distinguished by outstanding insecticidal and acaricidal activity against plant pests, hygiene pests and pests of stored products. They couple a low phytotoxicity and very low toxicity towards warm-blooded animals with a good action against both sucking and biting insects.

For this reason, the compounds according to the invention can be employed successfully as pesticides in plant protection and in the hygiene field and the field of protection of stored products.

To the sucking insects there belong, in the main, aphids (Aplil'due) such as the green peach aphid (Myzus persicae), the bean aphid (Doralis fabue), the bird cherry aphid (R/wpalusiplmm padi), the pea aphid (Macroslplmm pisi) and the potato aphid (Mac-rosiplium solunlflflii), the currant gall aphid (Crypmnrrzus korsclzelri), the rosy apple aphid Suppaphis muli), the mealy plum aphid (Hyulopterus urundinis) and the cherry black-fly (Myzus eerasi); in addition, scales and mealybugs (C(KClflil), for example the Oleander scale (Aspidiotus lzedeme) and the soft scale (Leeanium liesperidum) as well as the grape mealybug (Pseuduwc'c'us marilimus); thrips (T/zysanoplem), such as Hereinarlzrips femoralis, and bugs, for example the beet bug (Plesnza qumlruru the red cotton bug (Dysdereus [mermedius), the bed bug (Cl'mex lec'lularius), the assassin bug (R/zudnius prullrus) and Chagas' bug ('lriulomu infesrans) and, further. cicadas, such as Euseelis ln'lulmrus and Neplmteltix l7l]JllIl('[tl[llS.

In the case of the biting insects, above all there should be mentioned butterfly caterpillars (Lepz'dup rem) such as the diamond-back moth (Plulellu maeulipennis), the gypsy moth (Lymnlriu dis mi), the browntail moth (Ellprm'tix t'lzrysorrlweu) and tent caterpillar (Malaeosuma nenstriu); further, the cabbage moth (Mumesm brussic'ue) and the cutworm (Agrutis ,s'egemm). the large white butterfly (Pieris ln'ussieue), the small winter moth (Cnelmutobia brumaru). the green oak tortrix moth (Turtrix t'i 'izlunu), the fall arymworm (Lup/rvgmu jiugiperdu) and cotton worm (Prmleni'u lituru), the ermine moth (Hvponomeum puzlella), the Mediterranean flour moth (Ep/zesria kil/miellu) and greater wax moth (Galleria mellunellu).

Also to be classed with the biting insects are bettles (Culeupleru), for example the granary weevil (Simp/n'lus grunurius (aluna'ra grunaria), the Colorado beetle (Leplinumrxu deeemlinmlm), the dock beetle ((iusl rophysu riritlulu). the mustard beetle (Pliuulun (veil/curiae), the blossom beetle (Meligelhex ueneus). the raspberry beetle (Bymrus mmenlusns), the bean weevil (Bruchidius AeunI/mscelides ohleclus). the leather beetle (Dermestes frise/Ii), the khapra beetle ('Imgudernm grunurium), the flour beetle (l'rilmlium easmneum). the northern corn billbug (Calandra or Siroplzilus :eamuis), the drugstore beetle (.S'ugubium pmzieemn), the yellow mealworm ('l'enelario nmlimr) and the saw-toothed grain beetle (()r \':uepliilns .vurinw hu'nsix), and also species living in the soil. for example wireworms (Agriotes spec.) and larvae of the cockchafer (Melolontliu melolom/m); cockroaches, such as the German cockroach (Blutrellu germanieu), American cockroach (Periplanem umerieana), Madeira cockroach (Leueop/mea or R/zyparubia muzlerue) oriental cockroach (Blurm orienmlis), the giant cockroach (Bluherus gigunteus) and the black giant cockroach (Blaberus filSClIS) as well as Hensc/zoutezlenia flexirirm; further, ()rtlmpteru, for example the house cricket (Gryllus zlunzeslieus); termites such as the easterm subterranean termite (Rezieulitermesflm'ipes) and Hymem oprem such as ants, for example the garden ant (Lusius lliger).

The Diptera comprise essentially the flies, such as the vinegar fly (Dmsop/iila melunoguszer), the Mediterranean fruit fly (Cerurilis eapimm), the house fly (Museu domestic-a), the little house fly (Funnia mnieularis), the black blow fly (Pliornzia regina) and bluebottle fly (Calliphora erytlimeeplmla) as well as the stable fly (Sm nmrys cult-limits); further gnats, for example mosquitoes such as the yellow fever mosquito (Aedes ueg \'pti), the northern house mosquito (Culex pipiens) and the malaria mosquito (Anopheles srepliensi).

With the mites (Atari) there are classed, in particular, the spider mites ('Ierranyelzidae) such as the twospotted spider mite (Tetranyehm' telurius Telranyclzus altluleue or Tetrmrve/zus urricae) and the European red mite (Pararetrunyc/zus pilosus Panonyclzus ulmi), gall mites, for example the blackcurrant gall mite (Eriuphyes riln's) and tarsonemids, for example the broad mite (Hemitursonemus lalus) and the Cyclamen mite (Tarsonemus pallia'us); finally, ticks, such as the relapsing fever tick (Omit/zodurus muulmtu).

When applied against hygiene pests and pests of stored products, particularly flies and mosquitoes, the process products are also distinguished by an outstanding residual activity on wood and clay, as well as a good stability to alkali on limed substrates.

The active compounds according to the instant invention can be utilized, if desired, in the form of the usual formulations or compositions with conventional inert (i.e. plant compatible or herbicidally inert) pesticide diluents or extenders, i.e. diluents, carriers or extenders of the type usable in conventional pesticide formulations or compositions, e.g. conventional pesticide dispersible carrier vehicles such as gases. solutions. emulsions. suspensions. emulsifiable concentrates. spray powders. pastes. soluble powders. dusting agents. granules. etc. These are prepared in known manner. for instance by extending the active compounds with conventional pesticide dispersible liquid diluent carriers and/or dispersible solid carriers optionally with the use of carrier vehicle assistants. e.g. conventional pesticide surface-active agents. including emulsifying agents and/or dispersing agents. whereby. for example. in the case where water is used as diluent. organic solvents may be added as auxiliary solvents. The following may be chiefly considered for use as conventional carrier vehicles for this purpose: aerosol propellants which are gaseous at normal temperatures and pressures. such as freon; inert dispersible liquid diluent carriers. including inert organic solvents. such as aromatic hydrocarbons (e.g. benzene. toluene. xylene. alkyl naphthalenes. etc.). halogenated. especially chlorinated. anomatic hydrocarbons (e.g. chlorobenzenes. etc. cycloalkanes (e.g. cyclohexane. etc.). paraffins (e.g. petroleum or mineral oil fractions). chlorinated aliphatic hydrocarbons (e.g. methylene chloride. chloroethylenes. etc.). alcohols (e.g. methanol. ethanol. propanol. butanol. glycol. etc.) as well as ethers and esters thereof (e.g. glycol monomethyl ether. etc.). amines (e.g. ethanolamine. etc.). amides (e.g. dimethyl formamide. etc.). sulfoxides. (e.g. dimethyl sulfoxide. etc.). acetonitrile. ketones (e.g. acetone. methyl ethyl ketone. methyl isobutyl ketone. cyclohexanone. etc.). and/or water; as well as inert dispersible finely divided solid carriers. such as ground natural minerals (e.g. kaolins. clays. alumina. silica. chalk. i.e. calcium carbonate. talc. attapulgite. montmorillonite. kieselguhr. etc.) and ground synthetic minerals (e.g. highly dispersed silicic acid. silicates. e.g. alkali silicates. etc). whereas the following may be chiefly considered for use as conventional carrier vehicle assistants. e.g. surface-active agents. for this purpose: emulsifying agents. such as non-ionic and- /or anionic emulsifying agents (e.g. polyethylene oxide esters of fatty acids. polyethylene oxide ethers of fatty alcohols. alkyl sulfates. alkyl sulfonates. aryl sulfonates. albumin hydrolyzates. etc.. and especially alkyl arylpolyglycol ethers. magnesium stearate. sodium oleate. etc); and/or dispersing agents. such as lignin. sulfite waste liquors. methyl cellulose. etc.

Such active compounds may be employed alone or in the form of mixtures with one another and/or with such solid and/or liquid dispersible carrier vehicles and/or with other known compatible active agents. especially plant protection agents. such as other insecticides and acaricides. or fungicides. bactericides. rodenticides. nematocides. herbicides. fertilizers. growth-regulating agents. etc.. if desired. or in the form of particular dosage preparations for specific application made there from. such as solutions. emulsions. suspensions. powders. pastes. and granules which are thus ready for use.

As concerns commercially marketed preparations. these generally contemplate carrier composition mixtures in which the active compound is present in an amount substantially between about 0. l95% by weight. and preferably -90% by weight. of the mixture. whereas carrier composition mixtures suitable for direct application or field application generally contemplate those in which the active compound is present in an amount substantially between about 0.000140%.

preferably 0.01-1'/(. by weight of the mixture. Thus.

the present invention contemplates over-all compositions which comprises mixtures of a conventional dispersible carrier vehicle such as (l) a dispersible inert 5 finely divided carrier solid. and/or (2 a dispersible carrier liquid such an inert organic solvent and/0r water preferably including a surface-active effective amount ofa carrier vehicle assistant. e.g. a surface-active agent. such an emulsifying agent and/or a dispersingagent. and an amount of the active compound which is effective for the purpose in question and which is generally between about 00001-9571. and preferably 0.0l95'/z. by weight of the mixture.

The active compounds can also be used in accordance with the well known ultra--low-volume process with good success. i.e. by applying such compound if normally a liquid. or by applying a liquid composition containing the same. via very effective atomizing equipment. in finely divided form. e.g. average particle diameter of from 50-100 microns. or even less. i.e. mist form. for example by airplane crop spraying techniques. Only up to at most about a few liters/hectare are needed. and often amounts only up to about to 1000 g/hectare. preferably 40 to 600 g/hectare. are sufficient. In this process it is possible to use highly concentrated liquid compositions with said liquidcarrier vehicles containing from about to about 95% by weight of the active compound or even the 100% active substance alone. e.g. about 20l00% by weight of the active compound.

Furthermore. the present invention contemplates methods of selectively killing. combating or controlling pests. e.g. insects and acarids. which comprises applying to at least one of correspondingly (a) such insects, (b) such acarids. and (c) the corresponding habitat thereof. i.e. the locus to be protected. a correspondingly combative or toxic amount. i.e. an insecticidally or acaricidally effective amount. of the particular active compound of the invention alone or together with a carrier vehicle as noted above. The instant formulations or compositions are applied in the usual manner, for instance by spraying. atomizing. vaporizing. scattering. dusting. watering squirting. sprinkling, pouring. fumigating. dressing. encrusting. and the like.

It will be realized. of course. that the concentration of the particular active compound utilized in admixture with the carrier vehicle will depend upon the intended application. Therefore. in special cases it is possible to go above or below the aforementioned concentration ranges.

The synthesis. unexpected superiority and outstanding activity of the particular new compounds of the present invention are illustrated. without limitation. by the following examples.

The ketonitriles. or their alkali salts. which were to be used as starting compounds can be obtained by. for example. the following methods:

EXAMPLE 1 (IIIb) at 80C to give a gelatinous mass. 51 g 1.25 moles) of acetonitrile were introduced under the surface of the homogeneous mass and the bath temperature was raised to 120 140C. After 12 hours, the reaction mixture was cooled and poured in 2 l. of water. The mixture was extracted once with benzene to remove neutral compounds and was then acidified with concentrated hydrochloric acid. The precipitate which formed was taken up in benzene. After stripping off the benzene, a solid residue remained, which was recrystallized from a little ethanol. 112 g (79% of theory) of w-cyanoacetophenone of melting point 80 to 82C were obtained. Example 2 (IVb) EXAMPLE 3 NC -CH=C-ONa (IVc) A solution of 10.8 g of sodium cyanide in 20 ml of water and 20 ml of ethanol was added dropwise to 26.8 g (0.1 mole) of 2,5-dichloro-2-bromoacetophenone (prepared from p-dichlorobenzene and acetyl chloride by the Friedel-Crafts method, with subsequent bromination in ether) in ml of ethanol, while stirring, during which addition the temperature of the mixture rose to C. The batch was stirred for a further 15 minutes and cooled to 10C and the salt which had precipitated was thoroughly drained under suction. It was rinsed with ether and dried for 5 hours at 100 to l 10C under reduced pressure. 19.5 g (83% of theory) of a beige powder of melting point 300C were thus obtained.

The following benzoyl-acetonitriles and benzoylpropionitriles and their sodium salts were also obtainable analogously:

Table I Structure Yield Physical Prepared 7: of properties analogously theory (Boiling to method point or melting point) NCCH.,--CO Cl 68 129C 1 NCCH. ,CO 53 -78C l llld) NC C H2 CO 43 125C 1 lllel C 1 50 1 60C/ NCCH -CO 35 4 mm Hg 1 (lllf) B NC-CH -CO CH3 33 C 1 NC-CH CO 49 72C 1 lllh) NC -CH,C O 37 84-85C l (IDNa NC C H=C OC H 77 2 (llld) Table l-(iontinued Physical 7 properties Boiling point or melting point) Yield 7r of theory Structure Prcpurcd analogously to method (Illr) EXAMPLE 4 3 (IVm) Table 2 Continued Structure of theory) 48 OK (lVv) EXAMPLE 5 ll NC-CH2-CQ (IIIS) 72.5 g (0.5 mole) of 2-cyanoacetophenone were added in small portions to 180 g of fuming nitric acid (d 1.5) at 15C, the batch was stirred for a further hour at 5C and the reaction mixture was subsequently poured onto ice. The product which precipitated was filtered off and recrystallized from a little ethanol. 44 g (46% of theory) of 2-cyano-3'- nitroacetophenone of melting point 138 to 140C were obtained.

EXAMPLE 6 19.1 g (0.1 mole) of the sodium salt of 3-cyanopyruvic acid isopropyl ester was suspended in 200 ml of acetonitrile. 21.8 g (0.1 mole) of O-ethyl-S-npropyl-thionothiolphosphoric acid ester chloride were added dropwise to this suspension and the batch was allowed to react for a further 4 hours at 40C. The reaction mixture was then cooled and poured into 500 ml of toluene and the organic phase was washed with saturated sodium bicarbonate solution and water and dried over sodium sulfate. The solvent was then evaporated off under reduced pressure and the residue was subjected to incipient distillation. 30.2 g (86% of theory) of O-ethyl-S-n-propyl-O( 1-carbisopropoxy-2-methyl- 2-cyanoviny1)-thionothiolphosphoric acid ester were obtained in the form of a yellow oil of refractive index u 1.5149.

The following compounds were obtained analo- 10 g (0.1 mole) of w-cyanoacetophenone were added to a solution of 5.4 g (0.1 mole) of sodium methylate and 100 ml of methanol. When the w-cyanoacetophenone had completely dissolved the solvent was evaporated off and the residue was suspended in 150 ml of acetonitrile. 21.8 g (0.1 mole) of O-ethyl-S-n-isopropyl-thionothiolphosphoric acid ester chloride were added dropwise to this suspension and the batch was allowed to react for a further 4 hours at 40C. The reaction mixture was then cooled and poured into 500 ml of toluene and the toluene solution gously:

Table 3 S R C2H3O 1| 1 POC=C(R)CN (1) n-C;,H S

Physical properties Yield (refractive (7c of R R index) theory) 2) COOC;,H i n-C -,H n z 1.5062 63 (3) CO-OC2H n-C H n 1.5128 74 (4) -COOC- ,H5 iC H n 15169 58 5 -CO-OC H,-, n--C H n,,'-"": 1.5107 79 (6) -CO--OCH3 CH3 11, 1.5306 74 (7) -COOC H CH 1- 11 1 1.5182 74 (8) CO-OCH-CH2-CH3 CH3 n 1.5108 70 1 CH3 (9) CO OCHCH2CH H n,,: 1,5118 72 1 CH3 (10) CO-OC H;i H ri 15109 69 EXAMPLE 7 was washed with saturated sodium bicarbonate solution and water and dried over sodium sulfate. The solvent was then evaporated off under reduced pressure and the residue was subjected to incipient distillation. 31.5 g (96% of theory) of O-ethyl-S-n-propyl-O l-phenyl- 2-cyano-vinyl)-thionothiolphosphoric acid ester were C 11 0 S obtained in the form of a yellow oil of refractive index P-OC=CHCN (ll) D The following compounds were obtained analo- 3 7 gously:

Table 4 S CZHSO 11 1 POC==C(R)CN (I) n-C H S Physical Yield R R properties (7c of (refractive index) theory) 12) UC] H n,,**: 1.5788 66 CH3 (13) U H 11,3 1.5600 77 (14) CHBU H n,,' ":.l.599l 76 (15) U 3 H 11,5": 1.5669 79 (16) mock H n 145708 84 Table 4 -('ontinucd P()(=((R')Cl\' (I) n(' H S Physical Yield R R properties $2 of (refractive index) theo y) (33) Br H 1 1.5972 48 (34) c1 Q H 11,3; 1.5838 59 CH (35) C? H n 1.5548 85 (36) U CH;;- n 1.5608 35 (37) w H m 1.6147 35 EXAMPLE 8 16.6 g (0.2 mole) of S-methylisoxazole were first added dropwise to a suspension of 24.2 g (0.2 mole) of potassium tert.-butylate in 150 ml of acetonitrile while cooling with ice and stirring, and after one hour at C 44 g (0.2 mole) of O-ethyl-S-n-propyl-thionothiolphosphoric acid diester chloride were added dropwise. Thereafter the mixture was warmed to 60C for 2 hours. After cooling, the reaction mixture was poured into water and extracted by shaking with methylene chloride, the organic phase was washed with water until it gave a neutral reaction and was dried, the solvent was removed under reduced pressure and the residue was subjected to incipient distillation. 22 g (41.5% of theory) of O-ethyl-S-n-propyl-O-(1-methyl-2-cyanovinyl)- thionothiol-phosphoric acid ester were obtained in the form of a brown oil of refractive index u 1.5328.

EXAMPLE 9 24 g (0.125 mole) of 2-cyano-3'-nitroacetophenone were dissolved in ml of methyl ethyl ketone and the solution was warmed with 28 g of ground potassium hydroxide for 2 hours to 50C. After cooling to 30C, the reaction mixture was treated dropwise with 26 g (0.125 mole) of O-ethyl-S-n-propyl-thionothiolphosphoric acid diester chloride and warmed to 50C for 4 hours. After cooling to r oom temperature, the batch was poured into water and the oil which had separated out was extracted by shaking with methylene chloride. The organic phase was washed with water until it gave a -neutral reaction and was dried, the solvent was removed under reduced pressure and the residue was subjected to incipient distillation. 28 g (60% of theory) of O-ethyl-S-n-propyl-O-( l-m-nitro-phenyl-2- cyanovinyl)-thionothiolphosphoric acid ester were obtained in the form of a brown oil of refractive index 11 3 15802.

EXAMPLE 10 Table Dmruphilu Test) Active compound Active compound concentration in /1 Degree of destruction in 71 after 1 day (known) E) 23 100 100 100 100 100 100 100 l ()0 100 1 00 1 00 100 100 100 100 I 00 100 100 100 l 00 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 1 ()0 100 100 l ()0 100 l ()0 100 100 100 100 l 00 EXAMPLE ll Plutella test Solvent: 3 parts by weight of acetone Emulsifier: 1 part by weight of alkylaryl polyglycol ether To produce a suitable preparation of active compound, 1 part by weight of the active compound was mixed with the stated amount of solvent containing the stated amount of emulsifier and the concentrate was diluted with water to the desired concentration.

Cabbage leaves (Brassica oleracea) were sprayed with the preparation of the active compound until dew moist and were then infested with caterpillars of the diamond-back moth (Plutella mac'ulipennis).

After the specified periods of time, the degree of destruction was determined as a percentage; 100% means that all the caterpillars were killed whereas 0% means that none of the caterpillars were killed.

The active compounds. the concentrations of the active compounds, the evaluation times and the results can be seen from the following Table 6:

Table 6 (Flu/011a Test) Active compound Active com- Degree of pound concendestruction tration in in after 3 days S i 11 0.1 90 CH -%OP(OC H.-, )2 0.01 0 M.

(known) (E) 23 Table 6- C ontinued Plul 'lla Test Acti'vc compound Active com- Degree of pound concen destruction tration in in "/1 after 71 3 days 0.01 100 0.1 I 100 0.01 100 0.001 100 l 0.1 V 100 0.01 100 0.001 95 0.1 Y 100 0.01 100 0.001 100 (3) 0.1 100 0.01 100 0.001 100 (I) 0.1 100 i EXAMPLE l2 Myzus test (contact action) Solvent: 3 parts by weight of acetone Emulsifier: 1 part by weight of alkylaryl polyglycol ether To produce a suitable preparation of active com pound. 1 part by weight of the active compound was mixed with the stated amount of solvent containing the stated amount of emulsifier and the concentrate was diluted with water to the desired concentration.

Cabbage plants (Brussica oleracea) which had been heavily infested with peach aphids (Myzus persicae) were sprayed with the preparation of the active compound until dripping wet.

After the specified periods of time, the degree of destruction was determined as a percentage: 100% means that all the aphids were killed whereas 0% means that none of the aphids were killed.

The active compounds. the concentrations of the active compounds, the evaluation times and the results can be seen from the following Table 7:

Degree .01

. Active compound 1 Active com- I pound condestruction centration in "/1 after in /1 1 day c-cN (known) (E) ll 0.1 98 COP( OQ )2 0.01 20 11 f CH CCN I (known) (F).

' EXAMPLE l3 Solvent: 3 parts by weight of acetone Emulsifier: 1 part by weight of alkylaryl polyglycol ether To produce a suitable preparation of active compound, 1 part by weight of the active compound was mixed with the stated amount of solvent containing the stated amount of emulsifier and the concentrate so obtained was diluted with water to the desired concentration.

Bean plants (Phaseolus vulgaris), which had a height of approximately 10-30 cm., were sprayed with the preparation of the active compound until dripping wet. These bean plants were heavily infested with the twospottedspider mite (Tetranychus urticae) in all stages of development. I I

After the specified periods of time, the effectiveness of the preparation of active compound was determined by counting the dead mites. The degree of destruction thus obtained was expressed as a percentage: 100% means that all the spider mites were killed whereas 0% means that none of the spider mites were killed,

The active compounds, the concentrations of the active compounds, the'evaluation times and the-results.

can be seen from the following Table 8:

Table 8 Tetrunyc/zus Test) (Terranyclms Test) Active compound Active com- Degree Active compound Active com- Degree pound conof despound conof descentration truction 5 centration truction in I: in A in 71 in Z after 2 after 2 days days 5 0.00] 80 H (33) 0.1 100 0.01 90 caa-fi-o wctusn M 0.1 (26) 88 0101 so 25 0.1 100 (known) (E) 0.01 90 i 7) 0.1 I00 0.01 70 Que-moorin 0 1 99 (8) 0.1 100 H 3. CN W O 35 8"? 83 (known) (A) 0.0l 80 Il lt will be appreciated that the instant specification 8'6 8 and examples are set forth by way of illustration and not limitation, and that various modifications and (known) (B) changes may be made without departing from the spirit and scope of the present invention. cH O s What is claimed is:

G H 0 l 0 1. An O-ethyl-S-n-propyl-O-vinyl-thionothiolphos- 2 phoric acid ester of the formula H-C-CN (C) c n u :3 a

u 0.1 40 CHQO iC|OP(OC H,-,) 0.01 0 P--()- 1T. (I ii )CN l H-C-CN .1 (known) (H) 'j 'f c] S in which I] 0.1 60 R is lower alkyl, carbo-lower alkoxy, or phenyl or O -2 5); (3-01 0 naphthyl optionally substituted by halogen, nitro, C] nitrile, lower alkyl, lower alkoxy or halo-lower alkyl, and 0.1 [00 40 R is hydrogen or lower alkyl.

0.01 90 2. A compound according to claim 1 in which R is 8 :88 methyl, ethyl, carbalkoxy with 1 to 4 carbon atoms in 0:00] 30 the alkyl moiety, or phenyl or naphthyl optionally sub- 14 0.1 100 stituted by chlorine, bromine, fluorine, nitro, nitrile, (l3) 8:? 3g trihalomethyl, haloethyl, alkyl of l to 3 carbon atoms, 0.01 95 methoxy or ethoxy, and R is hydrogen or alkyl of l to (30) g- 8 4 carbon atoms. 100 3. The compound according to claim I wherein such 0.01 32 compound is O-ethyl-S-n-propyl-O-( l-carbisopropoxy- (l6) 8:5 [00 2-methyl-2-cyanovinyl)-thionothiolphosphoric acid 0.01 95 ester of the formula 18) 0.1 100 0.0l 98 g- 8 C H O S co -c a -1 II I (20) 8g PO-C=C(CH )CN 0100] n-C S (19 0.1 100 3H7 0.01 98 6 8g 4. The compound according to claim 1, wherein such 0:001 compound is O-ethyl-S-n-propyl-O-( l-carbisopropoxy- (27 0.1 100 60 2-n-propyl-2-cyanovinyl)-thionothiolphosphoric acid 8'85 22 ester of the formula (32) 0.1 100 0.01 100 (29 0.1 98 c n o f 0.01 2 5 0.1 100 001 90 P o (H: (Z1) 0.] lOO 27 2s 5. The compound according to claim 1 wherein such compound is O-ethyl-S-n-propyl O-[ l ps CH chlorophenyl)-2-cyanovinyl]-thionothiolphosphoric 2 5 5 acid ester of the formula P-O-C=CH-CN n-C 11 s 7. The compound according to claim 1 wherein such compound is O-ethyl-S-n-propyl-O-[ l-(2,4-dimethyls phenyl)-2-cyanovinyl]-thionothiolphosphoric acid C. H 0 1 I Z 5 ester of the formula P-O-C=CH-CN CH n-C ll S 5 C H 0 s CH P-0-C=Cll-CN 6. The compound according to claim 1 wherein such compound is O-ethyl-S-n-propyl-O-[l-(o-tolyl)-2- 3 7 cyanovinyl]-thionothiolphosphoric acid ester of the formula UNITED STATES PATENT OFFICE QERTTFTQATE OF CORRECTTO'N PATENT NO. 3 ,892 ,823

O DATED July 1, 1973 INVEN I Fritz Maurer et al.

It is certi ied that error appears in the above-identitiedpatent and that said Letters Patent are hereby corrected as shown betow: O

Col. l, line 28, correct spelling of "insecticidal".

Col. 9', line 26, cancel "#0 C" and substitute 140C Col. ll, Table 1, Compound (I111) cancel "((3 and subst-itut (CH D Col. ll, Table l, Compound (111m) cancel "ND" and substitute Col. 19, line 56, cancel "1.5328" and substitute 1.5318

Col. 23, Table 7, cancel second structural formula and substitute CH -C-O-P(00 1 (known) 7 (E) Col. 24, Table 7, cancel structural formula "(12) o Signed and Scaled this fourth Day of November 1975 [SEAL] Arrest: O

RUTH C. MASON C. MARSHALL DANN A Nesting Officer Commissioner oj'latems and Trademark; 

1. AN O-ETHYL-S-N-PROPYL-O-VINYL-THIONOTHIOLPHOSPHORIC ACID ESTER OF THE FORMULA
 2. A compound according to claim 1 in which R is methyl, ethyl, carbalkoxy with 1 to 4 carbon atoms in the alkyl moiety, or phenyl or naphthyl optionally substituted by chlorine, bromine, fluorine, nitro, nitrile, trihalomethyl, haloethyl, alkyl of 1 to 3 carbon atoms, methoxy or ethoxy, and R'' is hydrogen or alkyl of 1 to 4 carbon atoms.
 3. The compound according to claim 1 wherein such compound is O-ethyl-S-n-propyl-O-(1-carbisopropoxy-2-methyl-2-cyanovinyl) -thionothiolphosphoric acid ester of the formula
 4. The compound according to claim 1, wherein such compound is O-ethyl-S-n-propyl-O-(1-carbisopropoxy-2-n-propyl-2-cyanovinyl) -thionothiolphosphoric acid ester of the formula
 5. The compound according to claim 1 wherein such compound is O-ethyl-S-n-propyl-O-(1-(p-chlorophenyl)-2-cyanovinyl)-thionothiolphosphoric acid ester of the formula
 6. The compound according to claim 1 wherein such compound is O-ethyl-S-n-propyl-O-(1-(o-tolyl)-2-cyanovinyl)-thionothiolphosphoric acid ester of the formula
 7. The compound according to claim 1 wherein such compound is O-ethyl-S-n-propyl-O-(1-(2,4-dimethyl-phenyl)-2-cyanovinyl) -thionothiolphosphoric acid ester of the formula 